Draw voltage phasor diagrams for varying load shapes of salient pole synchronous generators and subtract the induced voltage.

A 6-pole, 3-phase, 60-cycle alternator has 12 slots per pole and four conductors per slot. The winding is 5/6 pitch. There are 2,500,000 maxwells (0.025 weber) entering the armature from each north pole, and this flux is sinusoidally distributed along the air gap. The armature coils are all connected in series. The winding is wye-connected. Determine the open circuit emf of the alternator.

1.) A 6-pole, 3-phase, 60-Hz alternator has 12 slots per pole and four conductors per slot. The winding is 5/6 pitch. There are 0.025 Wb entering the armature from each north pole, and this flux is sinusoidally distributed along the air gap. The armature coils are all connected in series. The winding is wye-connected. Determine the open circuit emf per phase of the alternator. Subject Electrical machine 2

e = 0 Q1: What does happen if we change two currents? a. Q2: What does happen if we have a three-phase four poles machine? Q3: What does happen if we have a two-phase two poles machine? e = 0 Q4: What does happen if we apply a capacitance in phase b and then use same voltage for both phase. Dr. Ali Ki. pw --

An Armature runs at 250 r.p.m. and generates an e.m.f. at 50 Hz. There are 216 slots each containing 5 conductors. The winding is distributed and full pitch. All the conductors of each phase are in series and flux per pole is 30 mWb which is sinusoidal distributed.Calculate the number of pole.

a) A sinewave is having a frequency of 50 Hz and instantaneous value of 150 Volts at 1.2 milli seconds. Find i) The maximum value of sinusoidal voltage waveform and i) The value of voltage at 1.7 milli seconds. b) Determine the instantaneous equation for the voltage waveform shown in figure, if Vp=100 Volts, Time period is 5 milli seconds and 0 =50 degrees. Vp i= 0 Upload your Answers steps in the "Final Answer Submission" Link provided in the Moodle. a) (i) Maximum value = a) (ii) Value of voltage at 1.7 ms b) Angular frequency %3D

Question: A 4 Pole DC Generator Is Wounded Lap. It Rotates At 500rpm To Be Able... A 4 pole DC generator is wounded lap. it rotates at 500rpm to be able to generate 150 V of open circuit voltage. What is the percentage decrease in the exixting flux per pole if a frequency of 10 rps can produce 120 V? %.

Calculate the phase voltages of a three phase star connected 4 pole small alternator having a total flux per pole 0.30 Wb. Each phase has a concentrated winding of 10 full pitched turns and the relative velocity between armature winding and field flux is 1500 rpm.

Calculate the phase and line voltages of three phase star-connected 4 pole smallalternator having a total flux per pole of 0.30 Wb. Each phase has a concentratedwinding of 10 full pitched turns and relative velocity between armature and field fluxis 1500 rpm

A three phase 20 pole star connected alternator has 140 slots on the armature. Each slot contains 8 conductors. It is driven at 350 rpm. The line value of emf available across the terminals is 2.8kV. Find the frequency of induced emf and flux per pole. Frequency of Induced EMF = Number of turns = Flux per pole = %3D